Dough-conditioning machine



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Jan, 20. 1925.

F. x. I ALrrERBuRl DOUGH CONDITIONING M15-.CHINE Filed Deb. 12, 1921 10 Sheets-Sheet 4 INVENTOR.

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I DOUGH CONDITIONING MACHINE 10Y Shee,tsSheet 5 F. x. LAUTERBUR Filed Dec. 12, 1921 NVENTOR.

.'Jan. 20. 1925.

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Jan. 2o. 1925. 1,523,883

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' l 523883 F. x. LAUTERBUR V Doma CONDITIONING MACHINE Filed D. 12'. 19.21 10 Sheets-Sheet 8 INVENTOR.

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Jan. 20. 1925, 1,523,883

F. X. LAUTERBUR noUGH CONDITIONING MACHINE Filed DS. 12. 1921 10 Sheets-Sheet 9 INVENTOR.

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Jam 20. 1925.

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Patented Jan. 20, 1925.

UNITED STATES PATENT OFFICE.

FRANK X. LAUTERBUR, F SIDNEY, O'HIO.

DOUGH-CONDITIONING MACHINE.

Application ledDeceniber 12, 1921. Serial No. 521,637.

T0 all whom it may concern is permitted to stand for, perhaps, an hour Be it known that I, FRANK X. LAU'rniv or more and again knocked down in the BUR, a citizen of the United States, and a same manner. The third and usually the resident of Sidney, in the county of Shelby last knocking down Will usually take place and State of Ohio, have inventedr a certain Within about a half an hour of the second, 55

new and usefull Dough-Conditioning Maafter Which the dough is ready for use in,

chine, of Which the following is a. full, clear, say, fifteen minutes.

and exact description, reference being had Some bakers then t-ake the dough and run to the accompanying drawings, forming it through rollers in a bra-ke machine in l0 part of this specification. small. batches prior to molding into loaves 60 scalin0"7 into sha )es for baking. The )resent invention .introduces into the C5 My invention relates to mechanical det0 young the dough, this opera-tion taking vices for taking the place of hand manipu- Considerable time. because the entire mass of lation in the conditioning of dough, after it the dough cannot be treated in this n'a-y, but

has been mixed, and prior to dividing` or onlya little at a time.

In the preparation of dough for bread baking industry an exact science for the and the like in the bakery following after conditioning of dough, eliminating a hand the mixing operation, the dough is ordi- Operation with its attendant objections and narily placed in a trough Where it is perpossible unsanitary methods. It does dismitted to rise and a treatment lasting a pense With the only present existing hand To number of hours takes place before the operation and certainly the one Where inedough is ready to be made into loaves for chanical operation should be welcomed in baking. the art.

There are mechanical devices for mixing My dough conditioning machine Will dough and for forming the loaves of dough preferably be placed in a room or compart- 7; in desired shapes Without any direct inaine-nt Where roomftemperature may be con nipulation of thevdough by the baker, but trolled as in the usual hand operation, a the conditioning of the dough priorto using condition that is essential in the proper it in the dividing machines has been almost treatment of fdlough. This will warrant a entirely n. matter of direct handling. uniformity of doughrising, and permit. the so Depending upon the nature of the dough dough to risc in exact times, and hence unaud the product desired, the 'treatment Awill der perfect control of the operator and the be varied, but taking an ordinary bread various operative steps may efficiently be dough, .it will be placed in the trough after made the silbject of record. Again, the

mixing and permitted to rise undisturbed conditioning rolls may be adjusted to handle 85 for several hours. The baker then proceeds dough-batches of any Weight, allowing a to Work some of the gas out of the dough by less or greater space between the rolls as the a process called knocking down. Thus he case may necessitate. Thus, as an example, passes [along the trough, punching down the if an eight-foot trough, holding 1000 dough with his hands and lifting it at one pounds of do-ugh requires a roll space of no side of the trough and pulling it up over one inch to successfully treat it, the rolls the other, so as to bring the unexposed porhandle a 75() pound batch with equal results tions of the dough uppermost, but more parby allowing a. roll-space of say three quarticula-rly to stretch it. He also lifts the ters of an inch, or such similar diiferential. mass of dough at its ends in the trough and One of the great practical ditiiculties in n.3 turns it in over the mass as much as possible, the handling of troughs of dough that continuing the punching until the. dough is they are usually quite heavy, running in in his judgment sufficiently stretched and Weight, in the usual bakery, to thousand reduced in gas. pounds and upward. Another difficulty is After the lirst knocking down the dough that to attempt to discharge dough out of loo a trough and back again would be disastro-us without special mechanical expedien-ts, since the troughs are simply open, narrow boxes and' would not hold back Vthe dough suiiiciently to permit dumping.

TheV dough when ready Vfor conditioning is in a very unwieldy condition and does not flow naturally as does a dough in the little after which it is deliveredV into another trough.

Y Another object of my invention is to provide a machine which will lift up a trough of dough and invert it without spilling the contents, and then will eject the dough from the trough along the entire lengt-h of the trough in such a way and yto accurately direct it to the space between the conditioning rolls aforesaid.

It is my object to provide safeguards in machines of the above noted character, which prevent the improper handling or dumping of troughs, and also to provide for adjustments of the conditioning rolls.

I am not aware of Lalny attempt, practical or otherwise, in the prior artto take the place of the knocking down7 operation, and any other operations for treatment of dough, while it is rising', in a mechanical manner, preserving the dough free of con tact with the bakers hands, and making the operations capable of pre-calculation and considerable accuracy.

These objects and other advantages to be noted I accomplish by that certain construction and arrangement of parts to be hereinafter more specilically pointed out and claimed.

In the dlrawings,

Figure 1 is a front elevation of the machine.

Figure 2 is a .section taken on the line 2-2 of Figure 1, showing the trough ele.

vated.

Figure 3 is an end elevation of the ma.- chine.

Figure 4 is a detail elevation of the bull gear and attached parts.

Figure 5 is a section on the line 5* Figure 4.

Figure 6 is a detail elevation of the co-nditioning rolls and operating parts, showing the gear case devices in section.

Figure 7 is la section on the line7-7 of Figure 6.

, Figure 8 is a plan view of one of the cam and track plates.

Figure 9 is a` detail' cross. section taken through one of the troughs, showing the special ends used in the particular embodiment of the invention shown in the other views.

VFigure 10 is a front and rear elevational view of the gear-cam member with portions of the mechanism controlled thereby.

. Figure 11 is a side elevation of the trough latch controlling parts.

Figure 12 is a like view to Figure 7. showing an additional pair of rolls for conditioning.

Figure 13 is a central vertical cross section taken at right angles to Fig. 2.

Figure 14 is a fagmental cross section taken at 14, 14, Fig. 8, showing the roller on a full depth crest.

Figure 15 is a fragmental cross section taken at 15-15, Fig. 8, showing the roller on a half depth rib.

Figure 1G is a fragmental cross section taken at 16-16, Fig. S, showing the roller lying in a full depth notch. i

Figure 17 is a fragmental cross section taken at 17-17, Fig. S, showing the roller in a half depth notch.

The machine shown in the drawings is but one embodiment of a structure which will accomplish the purposes of my invention, but I show it in considerable ldetail in order to describe one means whereby those skilled in the art may avail themselves of the ad* vantages of the invention.

Thus there is a base 1, upon which bakers" trough 1zt of usual size may be rolled, from which extend upwardly the side standards 2. The drive may be either from a motor il or from a pulley 4 to the driving shaft ()n this shaft 5 is a pulley (i from which a belt 7 runs to an idle pulley 8 on the overhead worm shaft 9. Also on this Ishaft 5 is a clutch 10, operated by a lever 11, said clutch vserving to couple a pulley 12 to the shaft,

same being otherwise loose thereon.

From the pulley 12 a belt runs to the pulley 13 on the shaft 14. T he shaft 0 is duplicated, and a chain and sprocket device, 15 connects the two shafts S). said shafts serving to drive the two bull gea rs.

The shaft 111 is mounted on the outside of the side frame and the shafts El are mounted to come directly over the bull gears (to be described below) The frame is tied together by tie rods in any desired way, no attempt being made to show in great detail the. purley frame parts of the mechanism.

Mounted firmly in the sides of the frame are cylindrical casings 16, which extend inwardly of the frame and inount at their inner ends, or are formed as part of boxes 17, said boxes being tied together by rods 1S across the frame and serving to house the conditioning roll, gears and bearings.

The bull gears 19, having teeth 2() and connected by tie rods 19t', are formed withdome-shaped bodies 21 to fit overthe boxes 1T, and said dome-shaped portions are journaled on the cylindrical casings 16.

Thus the bull gears may revolve while the;

length as great or greater than a trough` held between and inverted by the movement of the bull gears.

The conditioning rolls.

In the casing 16 at one side of the inachine is a shaft- 22, which extends through into the box at this point and is provided with a pinion 28. There are two roll shafts corresponding to the-arms 26 above nien-A tioned, and the other arm is inthe forniof,

a triangular plate 28.

The reason for the triangle is that this arm also carries pinions 33 and 33, mounted on a shaft 34, as will be described later.

On each journal is a triinnion 29, the` trunnions being right and` left-handl threaded, and a right and `left-handscrew '30 is set between each pair, so that therevolir tion of the screws will adjust the relative positions of the shafts 24 and 25.i As: a.

simple way of operating both screws at once I mount on the end of each screw a sprocket wheel 30a, said wheels being connectedby a chain S1, which will be manipulatedto adjust the screws.

ln the box containing the gears, the onel shaft 24 carries directly7 on it a gear 32, which meshes with the pinion 23 and lmoves in a planetary7 path around it during adjustment. On the triangular plate there is a loose pinion 33 meshing with thepinion 23 and also planetary with relation thereto. The pinion 33 is on a shaft34, which is joui'naled in the triangular plate 28 andY said pinion 33 meshes with pinion 23 `on shaft 22, at the other end of the shaft 34 ispurpose of setting the gears 36 and V32 out ofV the saine vertical plane is to permit ofi'the use of large gears, and still provide for a-V possible close adjusted relation of the conditioning rolls.

The conditioning rolls, as sho-wn at 37,

38,- are mounted fast Aon the shafts24 and 25 and by the mechanism described are driven in opposite directions with their paths both being downward toward the space between them.

The drive for the shaft 22 is from a worin 14L on the shaft 14 meshing with a worm wheel 22a on the said shaft 22. On two of the tie nods 18 between the boxesllT. are interspaced arms carrying scraper plates 18b for the two rolls. Springs on the plates, as at 18C, bear on the tie rods andhold the scrapers in position.

The bull gear operation.

Referring next to the drive of the bull gears, and the function thereof, it will be noted that the pulley 8 is loosely mounted oirtlie-one sha-ft 9, and coupled andruncoupled therefrom by a spring clutch device 40, and'that the sprocketl is fast on the one shaft 9 and not connected to the pulley, so that the clutch controls the operation yof both shafts-9. The bull gears are driven by worms 39 on Ythe shafts 9.

This clutch is held iii mesh by a spring 41 andpulled out of mesh by a rod 42 connected to a forked-lever 43lon the fra-me. On the adjacent bullgear theielare lugs 44 which contact with the end of the rod 42 and push the clutch out 'of mesh. The trip rod244a extending to a convenient position for operation, acts to movel the rod 42 through a small are suiiicient to free the end of the rod from the tip --of the lug, so thatV the: clutch can spring into engagement. The rod-will have suificientffree movement in its mounting brackets to give this free play, and the spring on the clutch will naturally pull it into` position to bel engaged by the next lug on the bull gear. In the mechanism shown thereaie two lugs on the bull gear. adapted to permita degree operation thereof upon each trippingof the clutch rod.

Eachbull gear has at 180 degrees apart webs .45,- which extendinwardly of the gears near` the center and then outwardly. Each gear has thereon apair of trunnions 4G located on their outer faces, said trunnions- Supporting swingiii-g frames 47, each of which has a roller 48 on its end. The frames are roughly triangular inshape and each has a web 49 thereon which willV pass between the spokes'of the bull gear and come into a position extending inwardlyv of the machine, outside of the webs 45.

Referring next to the donghftroughs it will ben-oted (Figure that theyhave special ends v50,.whiehhave central webs 51 that extendout from thevtrough endssand thence upwardly toward the open tops of the troughs to forma pocket. The ends have also near the base of the trough, webs .'32, which extend out straight from the ends and are formed in the shape of an arc,

drawn on the center yof the bull gears, considering the troughs in engaged position.

It will be noted, as the description proceeds, that the fixed webs 45 on the bullV Trough elevating and holding devices.

Tov lift the troughs a shoe is provided which is elevated by power to engage under the webs 52 on the troughs and so lift them up until the webs on the swinging frames can ride into the engaging position above mentioned. In the view shown in Figure l the troughs are in engagement at the top of the view and out of engagement at the bottom.

Mounted at the sides of the Yframe by means-of long lugs 53 are annular plates 54 v(FiguresS and ll), whichon their outer periphery provide a track for therollers 48 on the swinging frames 47. During the movement of the bull gears the said plates are so located that they'f'orce the rollers into a position vfor the web on the swinging frames'to engage the trough webs. At the bottom of these plates, however, there is a hinged iap 55, which, in one position, lies flush with the face of the respective plate, but which is swung outwardly by a toggle 56 connected to the flap, thereby permitting the rollers to move to a position to disengage the Webs above referred to. The flaps are formed in a U-shape so that when the rollers come into a position with the bull gears stopped, they will lie inside of the U (Figure 11) and be positively pulled 'outwardly when the iap is swung, and be positively swung inwardly when the flap is moved in.

The shoes 57 which elevate the troughs primarily, are mounted on twin rods 58, which are journalled to slide in the machine so that the shoes will come under the lower webs Von the troughs to raise them.

The frames have at their upper ends, antifriction rollers 60, and the toggles 56, aboveV referred to, have at their upper ends the anti-friction rollers 6l. The same devices operate both rollers to raise the troughs and control the latching wehs49, in a safe n and fool-proof manner.

Referring back to the' introductory description, it will be remembered that the shaft 14 was employed to revolve the conditioning rolls. On this shaft are a pair of clutches 62 (Figure 3), one working to the right and one to the left, same being controlled from the sliding rod 64. To slide y the rod 64 I employ a lever 65, which has a suitable handle and also a safety arm 66 for automatic regulation.

The operation of the clutch sets into motion one or the other of a pair of sprockets 67, both of which are connected by chains 68 with a pair of sprockets 69 at the top of the machine.

Each of the upper sprockets has a beveled gear 70 meshing with a larger beveled gear 7l on the top shaft 72. This shaft extends across the machine within a tube 7 which is used as a tie rod.

Adjacent each slide of the machine, the shaft is equipped with a gear 7 3 (Figure l), which meshes with another larger gear 74, said last mentioned gears having cams on both faces thereof (Figure lO).

On the inner face of the gears 74 is a eaiu rib 75, which has one deep depression 76 and close to it al shallow depression 77, said rib being otherwise roughly a spiral in contour. The rollers 60 on the elevating shoe rod device ride in this groove.

On the other side of the eam gears (the outer side), there is a cam groove 7S, in which rides the ro-ller 6l on the flap to toggle 56, said cam groove having a circular shape except for one deep pocket 7S.

Taking up the operation of these parts for the lifting and moving of the troughs, it will be noted that the troughs are moved into the machine laterally on their usual rollers, and the clutch lever moved to couple the right hand clutch. This will cause the gear cams to revolve in the direction shown in Figure 10 by the arrows. The roller 60 will be elevated slowly by the rib 7 5 until the shallow notch has nearly been reached and during this time the iap on the annular plates 54 will remain closed.

There is a lug of a width sutiicieut to prevent a complete revolution of the gear rains in either direction mounted at the periphery of each gear device, and extending into a position to engage the safety arm 66. This lug is shown at 79 and it will he noted that by the time the parts have come to a posin tion with' the Hap still closed and the roller 60 about to drop into its shallow pocket, thisl lug will contact with the safety ariu and move the clutch rod to a neutral position. If desired, a spring plunger S0 on the clutch lever can be used to insure the lever moving only to neutral, this plunger springing into holes in the supporting frame, as indicated at 81.

Just before the time the roller 6() has dropped into the shallow notch, the roller 6l will have moved to the position in the pocket 7 8a, so that just after the flap is fully closed the lifting device for the trough will give Way a little, and the entire mechanism will come to a stop.

The toggle operation is a fieXing outwardly which will shift the Hap in a. way which will be readily understood, the outward lier;-v ing taking place as the roller 61 moves int-o the cam portion 78a The point in having the roller G0 drop into the shallow groove is to permit the shoe 57 to lower a little, after the trough is lifted andv locked, so that when the bull gears start to move, the shoes will not be bearing the weight of the trough.

When the bull gears have moved through a halt revolution and stopped, the operator may desire to remove a trough of conditioned dough, whereupon he will have to move the clutch lever in the opposite direction to the one above described, since the lug 79 .is in the way ot' connecting up the right-hand clutch. The left-hand clutch will then reverse the operations above de-y scribed, with the result ot the parts coming into the position shown in Figure 10.

The reverse operation is used to deposit a trough at the bottom of the machine, The trough at the top ot the n'iachine is always held fast.

Trough closing lov/cesa Referring linally to the devices for closing the troughs and maintaining them closed until it is desired to dump the contents. The primary features otmy machine .in this regard are that the trough closures are part ot the machine and automatically operated and that they form a funnel-like opening for the troughs, so that in dumping they will direct the dough between the conditioning rolls through a somewhat constricted opening, whereby the upper dough, which has been on the trough while risingl is `taking place, will be sent first thro-ugh the rolls and go to the bottom of the receiving trough.

lhere are two sets ot closing vflaps 99, one ttor the bottom and one for the top of the machine ivhile stationary.

The fiaps are mounted on arms 9() (Figures 4 and 5), ot which there are two for each flap. The arms are pivoted to bolts 91 on the inner faces of the bull gears and have rollers 92 and 92a thereon, 92 being a short roller and 92a being a long roller (see Fig. 5), which extend through the spokes of the gears 20 to be engaged by camdevi'ces.

0n the main bodies of the arms 90 the closing lids or flaps 90a are mounted and so arranged that when the arms are swung toward the center ot the bull gears the liapsp will shut down over the troughs, but when swung outwardly the flaps will rest against the peripheries ot the conditioning rolls or closely adjacent thereto.

The annular plates 54 (Figure 8) have formed on their inner faces a cam groove 93 having two depths. Thus at the point 94 there is a rib formed in the groove partway of its depth, and also at thepont 95.

Taking the pairs of arms for one set of flaps, it will be noted that the rollers 92 and 92at thereof will be spaced apart in such a way that they will lie at the bottom of the machine on the full depth crests 9G and the halt depth ribs 94 (see Fig. 8). This position of the rollers will result in holding the flaps in open position. At the same time the rollers on the upper flap arms are lying in the notch 97 beyond the halt' depth rib 95, and in the halt depth notch 98. This will result in a swinging of the arms to open the iaps into the postion shown in Figure 2.

The use of rollers 92 and 92 ot di'tl'ereni.

lengths for the iap arms 90 result in a simultaneous opening of the iaps 90'Ll l'or theI top of the machine, and a simultaneous closing ot the liaps for the bottom of the machine, when the bull gears 20 come to a point of rest by lug 44 operating to throw out the spring clutch device 40. This takes place every 180 degrees of the rotation of said bull gears. Referring to Figure 3 and Figs. 14, 15, 16, and 17, the cam groove 93, mainly circular, but with the irregular surfaces 94, 96, 97, and 9S, is provided with a rib 94, of a similar contour to the full depth crest 96, but of a half depth, that is, if the cam groove 93 be one inch deep below the annular place 54, the r'b 94 will be only one half inch deep. Similarly, there is an upper rib 95 of a half depth. Now, referring to Fig. 8, it will be noticed circles representing the rollers 92 and 92a, and arrows denoting the rotary movement of the mechanism carrying said rollers. Taking the top of the machine first, the. long roller 92a is in advance of short roller 92, and reaching down the full depth of the groove 93 will ride over the half depth rib 95 until it comes to the notch 97. Simultaneously with roller 92a reaching the notch 97 the roller 92 reaches the halt depth notch 98 and hence both rollers 92 and 922L drop simultaneously as also the coactng arms 90 and the flaps 90A; and in this position the bull gear 2O instantly stops on account ot lug 44 disengaging the drive means by releasing the spring clutch device 40. While the upper sets of flaps 90 are being opened downwardly (as shown in Fig. 2) the lower set of flaps are being opened upwardly, but, as shown in the drawings, the action is not quite the reverse, although the means I herewithV illustrated may be subject to other modiiications within the spirit o my invention. The long roller 92a` is in advance of the short roller 92, and, in passing over crest 96 will open the one llap 90at and then close said lap as roller 92aL drops back into path of mainy cam groove 93, and with further travel of the roller 92a it will ride up the half depth rib 94 and again open flap 90a simultaneously with the shortv roller 92 rding up crest 96, and hence both flaps will close the coacting flap, while the short roller 92 will travel along the cam surface 93h and willnot close its mating flap until it reaches the top of the inclined cam surface 93a; thus the following flap 90a will not close as soon as the leading flap. However, both flaps may be closed simultaneously if so desired by adding additional mechanism to produce this result, but in the embodiment as shown I prefer to use the simplest construction, since it is not essential that the upper set of flaps close against the trough 1EL simultaneously on account of Y said trough being empty. The lowerset of flaps will close simultaneously because both rollers 92 and 92ZL are riding on cam surfaces 94 and 96 of similar contour.V This is the preferable operation since t-he trough has a batch of dough in the lower position. As the long roller 92a (which is riding on the half depth rib 94) advances it falls down the inclined cam surface 94 and hence closes its mating flap, and simultaneous with this movement is the action of roller 92 falling down the inclined cam surface 96a. 'Now roller 92 (being a short roller), as the movement progresses, will not ride up the half depth rib 94, but will pass alongside the said rib, and hence the roller 92, arm90 and coacting Hap 90u will not be effected thereby. Similarly,

special construction of the half depth rib 94 vcould be employed whereby the leading `flap 90a would be opened ahead of the following flap, a distance of travel equal to the distance the rollers 92 and 92a are spaced apart, for the crest 96 will open both said rollers. It is not necessary that both bottom flaps open upwardly simultaneously since the trough is empty in this position,

fand the length of the arms 90 are so constructed that as the one flap 90:L opens before the machine has made the full 180 degree movement, the clearance is sutlicient that the flap will not interfere with the scraper plates 18".

Operation of the machine.

bakery of fairly good sized production there will be about six batches, on the average` of dough in the process of conditioning. 'lhus the baker will have six troughs full or partially full of dough, which is rising, each batch having tobe treat-ed from time to time.

The baker having one of the ahove machines will carry one extra trough in the machine, which at the start he will turn uppermost. He will then roll under the maehine a trough as in Figure 1 and operate the lever which throws the clutch for elevating the trough into thc position in Figure 2. lhe resultant operation, it will he rcu'iemhered, is to bring the trough into cngagen'lent with the liXed and the swinging webs on the hull gears, and also to slightly lower the lifting shoes so that when the bull gearr-i sta-rt the troughs will not be resting on the lifting shoes.

The operator then operates the trip on the bull gear clutch device permitting it to snap into mesh, and the bull gears will slowly revolve. As soon as the revolution coirnnenees the flap lids for the lower trough will close together accurately over the top of the trough, which is accurately positioned with relation to the gears. Before the trough is tipped, the lids will prevent the dough from spilling, and by the time the trough is entirely inverted and the bull gears come to their automatic stop, the dough will he inverted along with the trough.

The instant of the trough coming to uppermost position will be accompanied by the opening of the lids of the trough, and just before this the lids of the empty trough, which was uppermost when the machine started, will have come to the lowermost position with its lids open.

The operator will have previously started up the conditioning rolls. so that they will revolve to feed the dough downward from the hopper formed by the. lids of the uppermost trough into the lowermost trough. The roll action will both squeeze the dough and elongate it as it pulls it out of the hopper, and since the dough has been inverted, the mass deposited in the lower trough will be inverted over its position before the operation began.

The operator will then operate the lifting device in a reverse direction. which will lirst disengage the swinging frame latch on the bull wheel and then gradually lower the trough until it rests on the base ot' the nia-A chine, ready for removal.

The empty trough above will be permitted to remain in place, and the operator van roll in another full trough that is to be treated.

Since the whole treatment is short as compared to the usual knocking down process, there will be great economy in labor cost, as well as in eiciency and cleanliness, because one machine can do all the knocking down for asmany troughs as desired. Unifornr ity of treatment hitherto impossible to secure may and will be accomplished by this machine, vastly improving the average quality of the bakers products. Also exact times for said treatments can be more uniformly followed since the operation is a mechanical one; and these features produce a doughof exact uniformity.

As a final operation of the dough, the rolls may be adjusted very close together, and a younging operation given to it as in the brake machines on the market today.`

In larger machines, using troughs of greater size and having room for additional rolls in the central portion thereof, I may provide for the arrangement shown in Figure 12. Thus the boxes 1'? are merely enlarged in size to make boxes 117 and another set of rolls used, which are set up and mounted exactly as if the showing` in Figure 7 were swung around on the shaft 22 to make up the lower rolls.

Thus in addition to the parts shown and numbered in Figure 7 there will be shafts 124 and 125 vcorresponding to the shafts and 25. There will be iournals 12493 and 1125, The arms 126 and the triangular plate 128 will correspond to the parts 26` and 28, as will the trunnions 129 and screws 130 correspond to the parts 29 and 30.

The pinions and gears will be located in the same way, except for the inversion, as the pinions and gears in Figure 7. The teeth will be less, however, on the gear 132 than on the corresponding gear 32, and on the pinion 133 as compared to the corresponding pinion 33.

The result of this modification is that the dough as it'passes through the two sets of rolls is pulled by the lowered set more rapidly than delivered by the upper set, and, therefore, is stretched or attenuated in body by the resultant action.

ln the preliminary knocking down, the lower set of rolls may be spaced so widely that they do not interfere with the passage of the dough to the lower trough. The lids for the troughs will bear on or lie adjacent to the upper set of rolls and the lower set of rolls in this modification.

I wis-h it distinctly understood that `the details of construction set forth above are not to be construed as limitations in the Scope of my .invention which I conceive to be broadly the idea of mechanically conditioning a batch of dough from a trough by means of rolls into which the trough is laterally dumped.

Having thus described my invention, what l' claim as new and desire to secure by Le"- ters Patent., is

1. In a machine for conditioning dough, the combination with a trough adapted to hold a mass of conditioning dough of driven rotary members, and means for demountably engaging' and dumping the trough of dough laterally between saidvrotary members.

2. In a machine for conditioning dough, the combination with a trough adapted to hold the mass of conditioning dough of driven rotary members, said members having a length approximately the same as the trough of dough, and means for demountably engaging and dumping the trough of dough between said rotarymembers ln a machine for conditioning dough, the combination with a trough adapted to hold the mass of conditioning dough of a plurality of pairs of rolls or the like. means for driving them, and means for demountably engaging and dumping the trough of dough laterally between them, whereby the dough passes between each pair.

4l. In al machine for conditioning dough,

the combination with a trough adaptedto hold the mass of conditioning dough ot' a plurality of pairs of rolls or the like, means for driving them, and means for demountably engaging and dumping the trough of dough laterally between them, whereby the dough passes between each pair, said lower rolls being adapted for higher peripheral speed.

5. 1n a machine for conditioning dough,

the combination with a trough adapted to 'i' hold the mass of conditioning dough of driven rolls, of means for demountably engaging and dun'iping the trough of dough laterally `between said rolls, and means for adjusting the relative lateral spacing of said rolls.

G. In a machine for conditioning dough. the combination with a trough adapted to hold a mass of conditioning dough with a conditioning element, of means for demountably engaging the trough of dough and inverting it into the conditioning element.

7. In a machine for conditioning dough, the combination with a conditioning element, of means for demountably engaging a troughof dough, means for closing the top thereof so as to prevent loss of the dough, means for inverting the trough and then opening the top thereof to dump the dough laterally into the conditioning element.

8. A method of comlitioning dough from a trough adapted to hold the dough batch while raising, which consists in passing the entire' mass of dough laterally of its length through revolving rolls or the like and into another trough.

9. A method of conditioning dough from a trough adapted to hold the dough batch while raising, which consists in passing the entire massof dough laterally of its length through revolving rolls or the like. Y

10. A method of conditioning dough from a trough adapted to hold the dough batch whilel raising, which consists in. inverting illu the entire mass of dough and passing it laterally of its length between revolving` rolls or the like.

11. In a machine for conditioning dough, the combination with a trough Vadapted to hold the mass of conditioning dough of driven rotary members', of means for ejecting a mass ofv dough from the trough with the top surface of the dough lowermost' into the space between said rotary members.

12. In a machine for conditioning dough, the combination with a trough adapted to hold the mass of conditioning dough of driven rolls, means for adjusting the lateral spacing kbetween them, and'means for demountably engaging and elevating and laterally dumping the trough of dough between said rolls.

13. In a machine of the character described, .the combination of rotating rolls,

a trough engaging device, a trough lifting device, a trough inverting device, a cover device for the trough to close it while being inverted, said devices being operable to lift and invert a trough of dough over the rolls, and then remove t-he cover to dump the contents bottom up between the rolls and finally to disengage the trough.

14. In a device of the character described, the combination with a trough adapted to hold a mass of conditioning dough of rolls located adjacent to each othercto engage and thin a mass of dough introduced rom above, and mechanism revoluble about said rolls and adapted to demountably engage and elevate a troughof dough over the rolls and demountably retain an empty trough beneath the rolls.

15. In a device of the character described, the'combination with a trough adapted to hold a mass of conditioning dough of a pair of revolving elements, trough clamping de` vices thereon, to demountably engage a trough, a set of rolls mounted axially of said revolving elements, and means for driving the rolls and the revolving elements.

16. In a device of the character described, the combination with a pair of revolving elements, trough clamping devices thereon to demountably engage a trough,a set of rolls mounted axially of said revolving elements, and .means for driving the rolls and the revolving elements, and trough closing means mounted on the revolving elements, and means for opening and closing said closing means.

17. Ina device of the character described, the con'iliination with a pair of revolving elements, trough clamping devices thereon to demountably engage a trough, a Set of rolls mounted axially of said revolving elements, and means for driving the rolls and the revolving elements, and trough closing means .mounted on the revolving elements, and means for opening and `closing said closing means, automatically upon desired positions of the revolving elements.

1S. In a device of the character described. the combination with a pair of revolving elements, trough clamping devices thereon, a set of rolls mounted axially oi said revolv ing elements, and means for driving the rolls and the revolving elements, and an inde pendent elevating device adapted to lift a trough into engagement with the said trough clamping devices.

19. In combination with means for lifting and inverting a trough of dough, an element on said means for engaging a trough and holding it, and a lifting and lowering device to place a trough into engagement and let it down from engagement with the said element.

20. In combination with means for lifting and inverting a trough of dough, an element on said means for engaging a trough and holding it, and a lifting and lowering.;l device to place a trough into engagementand let it down from engagement with the said element, said device being operable. only alternately to lift a trough in one movement and lower it in the next.

21. In combination with rotating means for lifting and iniferting a trough of dough, a clamping device for engaging and holding thetrough on said rotating means, and an elevating and lowering device co-operating with the clamping device to alternately lift a trough into engagement therewith, and release the clamping device and lower the trough.

29.. In combination with means for lifting and inverting a trough of dough, an element on said means for engaging a trough and holding it, and a lifting and lowering de vice to place a trough into engagement and let it down from engagement with the said element, said device also adapted to control the said element to the extent of releasing it at a given position of the lifting device.

23. In combination with rotating meansl for lifting and inverting a trough of dough` a clamping device for engaging and holding the trough on said rotating means, and an elevating and lowering device (fo-operating with the clamping device to alternatelyY litt a trough into cngagen'icnt therewith. and re lease the clamping device and lower the trough, said releasing ot' the clamping mechanism being n'iechanically limited to take place at one position only ot the rotating means.

24. In combination with means for lifting and inverting a trough of dough, an element on said means for engaging a trough and holding it, and a lifting and lowering device to place a trough into engagement and let it down from engagen'ient with the said element, said device having a limited operation controlled mechanically to alterlllll lllkl nately litt a trough to a given position and then stop and at the next energization to lower a trough from said position and stop.

25. ln combination with rotary means for lifting and inverting a trough olf dough, a IiXed engaging member on the rotating means, and a movable engaging member on the said means, said two members being adapted to engage and hold a trough ot dough between them, a ixed abutment to hold the movable member in engaging position, a releaseoperating in connection with the fixed abutment at av selected point thereon to release the movable member, and an elevating device mechanically connected to said release to accomplish an engaging position thereof, when a trough is elevated to position for such` engagement.

26. ln combination with rotary means for lifting and inverting a trough ot dough, a lined engaging member on the rotating means, and a movable engaging member on the said means, said two members being adapted to engage and hold a trough ot' dough between them, a lined abutment to hold the movable member in engaging position, a` release operating in connection with the fixed abutment at a selected point thereon to release the movable. member, and an elevating device mechanically connected to said release to accomplish an engaging position thereoit, when ak trough is elevated to position for suoli engagei'nent, said elevating device adapted to move away from engagement after said engaging` position has been accomplished,

27. A. dough trough adapted for use with an elevating and inverting'device, comprising a long open-topped box-like structure having at its ends a web for engagement by the inverting device and a lower web :tor engagement by an elevating device.

28. The combination with a hinged member on a movable trough lifting device, said member being adapted to engage and hold a trough of dough, an elevating device, an abutment against which the hinged member rests to hold it in trough engaging position except at a selected point, a rocking means at said point to move the member out ot engagement, and a common element Jfor the rocking means and the lifting device adapted to operate them together in timed relation.

Q9. The combination with a hinged member on a movable trough lifting device, said member being adapted to engage and hold a trough of dough, an elevating device, an abutment against which the hinged member rests to hold it in trough engaging position except at a selected point, a rocking means at said point to move the member out of engagement, and a common element for the rocking means and the lifting device adapted to operate them together in timed relation and comprising' a rota-r;7 member with two cam faces.

30. ln combination with rotating means for lifting and inverting a trough ot' dough, a clamping device for engaging and holding the trough on said rotating means, and an elevating and lowering` device co-operating with the clamping device to alternately lift a trough into engagement therewith, and release the clamping device and lower the trough, said rotating means being adapted to move through a portion ot a circle and stop, and the clamp being held against release except at a stopped position et the rotating means.

3l. In combination with means 'for lifting and inverting a trough ot dough, an element on said means for engaging a trough and holding it, and a lifting and lowering device to place a trough into engagement and let it down from engagement with the said element, said device having a limited operation controlled mechanically to alternately lift a trough to a given position and then stop and at the next energization to lower a trough from said position and stop, said lifting means being adapted to lower a trough to position for delivery and then stop, and the engaging element on said litting means being adapted tor release only when a trough is at delivery position.

32. lin combination with a trough adapted to hold a mass oli conditioning` dough oit rotating rolls through which a mass ot dough is passed, a rotating means 'for demountably engaging and lifting a. trough of dough through a circular path about said rolls, and an operating device for said rotating means adapted to stop automatically when a trough has been lifted 'to a position for delivery of the dough to said rolls.

33. In combination with rotating rolls through which a mass ot dough is passed, a rotating means for demountablv engaging and lifting a trough ol dough through a circular path about said rolls, and an operating device Ytor said rotating means adapted to stop automatically when a trough has been lifted to a position tor delivery of the 'dough to said rolls, a closure tor a trough carried by the rotating means, and means tor automatically opening the closure as the rotating member comes to a stop.

34. ln combination with a trough adapted to hold a mass oitI conditioning dougl'i oil rotating rolls througli which a massl ot dough is to be passed, a pair ot bull gears rotating about the axis oil the roll assembly, means on the bull gears tor demountably engaging a trough ci' dough, means for driving the bull gears adapted to stop automatically atter a given moven'ient, said roll driving means adapted to rotate them independently of the bull gear movement.

35. ln combination with means tor conllO ,adapted to ditioning dough, a pair of bull gears rotating" about the axis of the conditioning means, worms for drivingthe bullv gears` an automatic stop motion drive for the worms, trough engaging means onthe gears demountably engage said troughs, a trough closure on the gears, and cammeans tor controlling the position of the closure.

86. The combination, in a machine oii'the character described, ot a pair of large rotating members, controllable trough engaging means on the members to retain and release a trough, a trough closure on the rotating members, and automatic means tor c ontrolling the closure, said closure comprising a pair of lids for a trough, lid carryingV arms on the rotating members, and cam means for controlling the position of the arms.

37. T he combination, in a machine of the character described, ot a rotating element having interspaced members betweeirwhich a trough of dough is grasped and retained, a conditioning device mounted between said members axially thereof, and a closnrevdc- -vice for the troughs comprising a pair of iids, and means, for closing said lids over a trough,- and openingithem by the rotating element to a position to form a tapering tunnel-like mouth extendingrlaterally ci' the trough and directed toward the conditioning device.

88. Thecombination, in a machine of the character described, of a rotating element having an automatic stop motion, said element having interspaced members between which a dough'trough is grasped and retained, a conditioning device mounted axiall-y between saidY members, and a closure device for the troughs, comprising a pair of lids adapted to close over the trough and to take a position -for'ming a funnel-like mouthV extending laterally ot the trough, and cam means for controllingfthe openingand closing of the lids dependent upon the position of the rotating element.

V3.9In a machine of the character described, a pairof interspaced casings, conditioning rolls mounted in said casings, means for driving the rolls. and rotating trough lifting and invertingdevices, journaled on the casings and having means for detachably engaging troughs ot dough.

40. In a machine of theeharacter described, a pair oi: interspaced casings, conditioning rolls mounted in said casings, means Ytor driving the rolls, and rotating trough lifting and inverting devices, journaled on the casings and having means for detachably engaging troughs of dough, and having closure for troughs of dough adapted when opened to form Jfunnel-like mouths laterally of the troughs and directed to the rolls. Y

41. In aV machine or the character described` a pair ot interspaced casings, conditioning rolls mounted in said casings, means for driving the rolls. and rotating trough lifting and inverting devices, journaled on the casings and having means for detaehablv engaging troughs ol dough, and means for adjustably positioning said rolls.

42. In a machine of the character de scribed, the combination of a pair of interspaced casings, conditioning rolls mounted in said casings, a drivingr shaft entering on(` of said casings, gears in said casings `for driving thc rolls, and swinging adjustable arms on said shat't in which the said gears and rolls are .mountedv` and an elevating device adapted to lit't and invert troughs oi dough over said rolls.

43. In a machine ol the character described, the combination oi a pair of :asings, conditioning rolls extending between said casings, a shaft entering one of said casings, spindles Yfor the rolls, each casing having swinging arms tor journaling the spindles` and an interconnected adjusting device 'for the arms adapted to swine them into various positions, one oiE said arms being formed to carry a reversing pinion, and gearing Jfor the spindles and the shaft, one of said arms having its gearing in a different vertical plane from the, other,

whereby the teeth will not interfere with a close positioning of the rolls.

44. In a machine of the character described, a pair oi casings, said casingshaving restricted portions and journal box portions, a driving shaft for one of said casings, a gear on the shaft,'conditioningrolls Yextending between and jonrnaled in the boxes, said rolls having gearing toiinesh with the shaft gear, and liftingand invertingV devices journaled on the restricted portions of the casings and housing the boxes,

fsaid devices having means for retaining a trough of dough between the inner edges of the boxes, whereby it will not overlap the boxes,

45. In a device of the character described, the combination of rotatingmeans interspaced to retain a trough ot dough between them, and closures for a trough of dough on said rotating means, said closures comprising lids, and arms hinged on the rotating meanst'or holding the lids, said arms having contact means extending laterally trom the rotating means anda facial cani Vhaving grooves `tor the contact means adapted to control the opening and closing of the lids.

46. In a device of thc character described, the combination of rotating means interspaccd to retain a trough ot dough between them` latch devices ior retaining the trough of dough controllahly on said rotating means, said devices` comprisingl a swinging arm With cont-act means thereon, a circular RSO 

